Justin Moore has his little boy! The country singer-songwriter and his wife Kate are parents for a fourth time to their first son, Moore's rep confirms exclusively to PEOPLE. Baby boy Thomas South Moore was born Sunday, June 11, at 3:33 p.m. in Little Rock, Arkansas, measuring 20 inches long and weighing 7 lbs., 14 oz.

"Kate and I already felt like the most blessed people in the world, with our three beautiful daughters," Justin tells People. "But, we feel even more blessed to have a healthy baby boy now to add to our family. God has given us another wonderful gift, in him, June 11th. His name is Thomas South Moore, named after my late grandfather. We will call him South. His sisters are already obsessed with him, as we are all of them. Thanks for all the well wishes and congratulations. Very much appreciated."